How to change water pump impeller on johnson outboard

Clean the water pump key area. Inside the pump housing there is a rubber impeller that is keyed to the driveshaft.

Installing a new water pump impeller kit that fits th.

How to change water pump impeller on johnson outboard. Installing a new water pump impeller kit that fits th. Next step in the process is to slide the drive shaft down through the pump but you can see here theres this sort of brass hex section and I believe that to be the inside of the original impeller you can see here this impeller has a round brass section in the center and I think thats what this is so Im just going to get a hammer and a punch and actually try and just drive this off the drive shaft. Changing a water pump impeller on johnson 115.

If you have a Manual and some tools its not a big deal. Besides it is part of the motors maintenence every year or two. Basically you take the lower unit off and the water pump sits on top of it.

You replace the pump. Once the keeper is removed shift the lower unit into forward and remove the nut from the upper shift rod. Remove the forward nut and four bolts on the side of the lower units two bolts on each side 6.

Separate the lower unit from the exhaust housing by pulling it straight away form the exhaust. Push the water pump housing down over the driveshaft and twist it against the tops of the impeller blades in the correct orientation that you removed it. Turn the propeller with one hand and shove the housing down with the other hand to seat the pump housing.

Insert the water pump housing bolts and tighten them with a socket. Pull the pump insert out of the water pump cover with the needle nose pliers. Apply gasket sealant to the outer diameter of the replacement driveshaft seal.

Install the new seal from the pump replacement kit into the top of the pump housing so that the rounded edges of the seal face toward the impeller. Remove the water pumps mounting bolts. Remove the O-ring from the drive shaft.

Remove the water pump case. Check for sand dirt and debris in the power head and flush it out if necessary. Use a screwdriver to remove the impeller.

Note the position of the plastic key then remove and replace it. Clean the water pump key area. Water Pump Kit for Johnson Evinrude Outboard.

Of course your motors impeller needs to be changed regularly but its also a good idea to replace other components of your water pump to maintain proper engine cooling. Water pump kit contents vary so please take a look at the categories below and check the content of the kit you order. Slide the water pump down the driveshaft.

Align the impeller slot with the impeller key. Rotate the driveshaft to engage the key with the impeller and slide water pump down over the key. Be sure impeller key does not fall out of position.

Make sure the impeller engages the impeller key. Serious powerhead damage will result if impeller key is. It is located just above the lower gear case assembly making it easy to service.

Inside the pump housing there is a rubber impeller that is keyed to the driveshaft. As water enters into the lower gear case via the inlets on the side of the lower unit the driveshaft will turn the pump impeller. To do that we put the key in place in the slot on the drive shaft take the impeller slide it down the drive shaft and align the keyway on the impeller to the keyway on the shaft.

Now were going to install the housing were going to spray just a little bit of lubricant just to lube that impeller until we get water on it. July 9 2011. The water pump impeller of any outboard motor needs to be serviced on a regular basis a task that if overlooked can lead to big trouble.

Most outboard maintenance schedules call for inspection of the impeller every 100 hours or once a year. Rebuilding a Johnson 6HP Outboard Water Pump. Install the new impeller housing plate included in the water pump repair kit making sure the small tab on the plate is pointing upward.

Install the new water pump gasket included in the kit and tap the. Pull the impeller out making sure not to lose the shaft key if it has one. Clean out the inside bore of the impeller housing with carburetor cleaner and a rag.

Lubricate the inside of it with petroleum jelly. Place the new impeller inside the top casing in the correct blade orientation and insert the shaft key if. Also below is the process broken down into step-by-step instructions for the disassembly process as well as the reassembly process.

If you have a 95 Hp johnson or Evinrude well then you are in luck because this process is identical for you motor. Of course the seal kits and water pump impellers for these motors can be found here and here. How to Replace a Johnson 15HP Outboard Water Pump.

By Will Charpentier. Apply gasket sealing compound to the impeller housing O-ring the water tube grommet and the outer rim of the metal casing of the new driveshaft seal. Install the seal atop the water pump housing with the lips of the seal facing toward the impeller.

Remove any gasket sealing compound from the pump cup. Place grease in impeller area of the pump cup. Place the pump cup in the housing assembly on the drive shaft.

Slowly turn the drive shaft in a clockwise direction while simultaneously pressing down on the pump housing. Note the size of the new impeller and housing.